EP 1935926 A1 20080625 - Process of preparing a rubber composition
Title (en)
Process of preparing a rubber composition
Title (de)
Verfahren zur Herstellung einer Gummizusammensetzung
Title (fr)
Procédé pour la fabrication d'une composition de caoutchouc
Publication
Application
Priority
- US 87609506 P 20061220
- US 93080507 A 20071031
Abstract (en)
The invention is directed to a process for the production of rubber composition, wherein the rubber composition comprises 100 parts by weight of elastomer. The process comprises the steps of (A) mixing a first composition comprising 30 to 110 phr of a silica filler and 20 to 90 phr of a diene based elastomer selected from cis 1,4-polyisoprene rubber (natural or synthetic), 3,4-polyisoprene rubber, styrene/isoprene/butadiene rubber, emulsion and solution polymerization derived styrene/butadiene rubbers, and cis 1,4-polybutadiene rubbers, to form a first nonproductive compound; (B) mixing a second composition comprising from 10 to 80 phr of a rubber containing a nitrile moiety and the first nonproductive compound to form a second nonproductive compound; and (C) mixing a third composition comprising curatives and the second nonproductive compound to form a productive compound.
IPC 8 full level
B60C 1/00 (2006.01); C08J 3/20 (2006.01); C08K 3/36 (2006.01); C08L 21/00 (2006.01)
CPC (source: EP US)
B60C 1/0016 (2013.01 - EP US); C08J 3/20 (2013.01 - EP US); C08L 9/00 (2013.01 - EP US); C08L 9/02 (2013.01 - EP US); C08L 9/06 (2013.01 - EP US); C08L 21/00 (2013.01 - EP US); C08J 2321/00 (2013.01 - EP US); C08K 3/36 (2013.01 - EP US); C08L 7/00 (2013.01 - EP US); C08L 2205/03 (2013.01 - EP US); Y10T 152/10495 (2015.01 - EP US)
Citation (search report)
- [XY] EP 0763558 A1 19970319 - GOODYEAR TIRE & RUBBER [US]
- [Y] EP 0731134 A1 19960911 - GOODYEAR TIRE & RUBBER [US]
- [DY] US 6242534 B1 20010605 - OBRECHT WERNER [DE], et al
- [A] WO 2004000932 A1 20031231 - BAYER AG [DE], et al
Designated contracting state (EPC)
DE FR IT
Designated extension state (EPC)
AL BA HR MK RS
DOCDB simple family (publication)
DOCDB simple family (application)
EP 07123321 A 20071217; US 93080507 A 20071031